4491240 has 64 divisors (see below), whose sum is σ = 14515200. Its totient is φ = 1105152.

The previous prime is 4491217. The next prime is 4491241. The reversal of 4491240 is 421944.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 4491240.

It is not an unprimeable number, because it can be changed into a prime (4491241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121 + ... + 2999.

It is an arithmetic number, because the mean of its divisors is an integer number (226800).

Almost surely, 2^4491240 is an apocalyptic number.

4491240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4491240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7257600).

4491240 is an abundant number, since it is smaller than the sum of its proper divisors (10023960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4491240 is a wasteful number, since it uses less digits than its factorization.

4491240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2906 (or 2902 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 4491240 is about 2119.2545859335. The cubic root of 4491240 is about 164.9891636593.

The spelling of 4491240 in words is "four million, four hundred ninety-one thousand, two hundred forty".